EP0249776A2 - Cooling and lubrication system for an internal-combustion engine - Google Patents

Cooling and lubrication system for an internal-combustion engine Download PDF

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Publication number
EP0249776A2
EP0249776A2 EP87107652A EP87107652A EP0249776A2 EP 0249776 A2 EP0249776 A2 EP 0249776A2 EP 87107652 A EP87107652 A EP 87107652A EP 87107652 A EP87107652 A EP 87107652A EP 0249776 A2 EP0249776 A2 EP 0249776A2
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EP
European Patent Office
Prior art keywords
cooling
lubrication
circuit
lubrication system
liquid
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Granted
Application number
EP87107652A
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German (de)
French (fr)
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EP0249776A3 (en
EP0249776B1 (en
Inventor
Gary M. Luterek
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Deere and Co
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Deere and Co
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
    • F01M5/00—Heating, cooling, or controlling temperature of lubricant; Lubrication means facilitating engine starting
    • F01M5/005—Controlling temperature of lubricant
    • F01M5/007—Thermostatic control
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P9/00—Cooling having pertinent characteristics not provided for in, or of interest apart from, groups F01P1/00 - F01P7/00
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P3/00—Liquid cooling
    • F01P2003/006—Liquid cooling the liquid being oil
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P3/00—Liquid cooling
    • F01P3/02—Arrangements for cooling cylinders or cylinder heads

Definitions

  • the invention relates to a cooling and lubrication system of an internal combustion engine with a pump, a cooling circuit and a lubrication circuit.
  • the object on which the invention is based is seen in creating a cooling and lubricating system for an internal combustion engine which results in the smallest possible design or optimal utilization of a heat exchanger.
  • the size of the volume flow can be measured independently of one another, both through the cooling circuit and through the lubrication circuit, so that the components, e.g. B. a heat exchanger in the cooling circuit only the really required volume flow is supplied.
  • An internal combustion engine 10 is equipped with a cylinder head 12, an engine block 14, a collecting container 16 for liquid, in particular for oil, and with a pump 18.
  • liquid used below includes both cooling liquid and lubricating liquid.
  • a plurality of cylinders 20 are provided, one of which is shown, and in each of which a piston 22 moves back and forth, which are connected to a crankshaft 26 via connecting rods 24.
  • the cylinder head 12 has inlets 28 and outlets (not shown), valves 30, valve seats 32 and rocker arms 34 driven by a camshaft 35.
  • the pump 18 draws liquid from the collection container 16 and pumps it to a main gallery 36, from where it flows back to the collection container 16 via a cooling and a lubrication circuit which are connected in parallel with one another.
  • the liquid flows from the main gallery 36 to a filter 40 via a line 38.
  • This filter 40 is bypassed via a bypass line 42 if it is clogged and a pressure control valve 44 then opens.
  • the liquid can also be supplied to the collecting container 16 via a further pressure control valve 46 and a line 48.
  • a line 50 also runs to one Lubrication gallery 52, which is incorporated into the engine block 14.
  • the lubrication gallery 52 supplies liquid to a conventional lubrication circuit of the internal combustion engine 10, which in particular contains main bearing lubrication channels 54 and spray nozzles 56.
  • a line 58 also leads from the lubrication gallery 52 to a lubrication gallery 60 in the cylinder head 12, which supplies liquid to the bearings of the rocker arms 34 and the camshaft 35.
  • the liquid consumed in the cylinder head 12 collects in a gallery 62 and flows from there via a line 64 back to the collecting container 16.
  • the cooling circuit of the internal combustion engine 10 includes a conduit 100 that carries liquid from the main gallery 36 to a gallery 102 near the top of the cylinders 20. From there, the liquid flows to annular cooling grooves 104, via which the upper region of the cylinders 20 is cooled, and then on to a gallery 106.
  • a conduit 108 conducts fluid from gallery 102 to gallery 110 in cylinder head 12. From this gallery 110, the fluid flows through annular grooves 112, which are arranged around valve seats 32 of the exhaust valves, to gallery 114 in cylinder head 12 which flows out again via lines 116 or 118.
  • the heated liquid is fed from the internal combustion engine 10 via a control valve 120 to a heater 122 in a room 123, in particular in a driver's cab of an agricultural tractor, and from there via a line 124 to the collecting container 16.
  • a control device 121 for the control valve 120 is preferably provided in the space 123 so that the amount of the hot liquid which is supplied to the heater 122 can be set by an operator.
  • Line 118 leads liquid from the gallery 114 in the cylinder head 12 to the gallery 106 in the engine block 14, from where it flows via a line 126 to a temperature-controlled thermostatic valve 128.
  • This valve 128 is preferably controlled as a function of the liquid temperature in the lubrication gallery 52, which is detected by means of a transmitter element 130.
  • the transmitter element 130 is designed in the manner of a temperature sensor, which is accommodated in the engine block 14 and is exposed to the liquid in the lubrication gallery 52.
  • Valve 128 supplies hot liquid from line 126 to either reservoir 16 via bypass 131 or to heat exchanger 134 via line 132.
  • the heat exchanger 134 contains series-connected first and second stages 134a and 134b, a first outlet 136, a second outlet 138 and a drain 139.
  • the first outlet 136 contains only liquid which has been taken from the first stage 134a.
  • the second outlet 138 receives liquid which has flowed through both stages 134a and 134b. Accordingly, the liquid that has only flowed through the first stage 134a and exits at the first outlet 136 will be hotter than liquid that exits at the second outlet 138.
  • the liquid in the line 132 can be approximately 140 ° Celsius, at the first outlet 136 approximately 110 ° Celsius and at the second outlet 138 approximately 60 ° Celsius.
  • the heat exchanger 134 is configured to allow a greater volume flow to the first outlet 136 than to the second outlet 138. Accordingly, the additional volume of the heat exchanger 134 required to bring the liquid to the lowest temperature at the second Cool down outlet 138, not flowed through by the total amount of liquid flowing to heat exchanger 134, and the flow through second outlet 138 is only about half the amount of liquid exiting first, hotter outlet 136.
  • a line 140 the cooled liquid from the first outlet 136 of the heat exchanger 134 to the collecting container 16. Liquid is withdrawn from the second outlet 138 via a further line 142 and delivered to a charge air cooler 144, from where it also flows via a line 146 to the collecting container 16.
  • an additional lubrication line can be provided in order to conduct liquid for lubrication from the filter 40 out of the turbocharger and back into the reservoir 16.

Abstract

Ein Kühl- und Schmiersystem eines Verbrennungsmotors (10) mit einer Pumpe (18), einem Kühlkreislauf und einem Schmierkreislauf ist derart ausgebildet, daß Schmier- bzw. Kühlflüssigkeit von der Pumpe (18) aus dem Kühl- und dem Schmierkreislauf der Pumpe (18) parallel zugeführt wird. Auf diese Weise braucht nicht die gesamte, zum Schmieren benötigte Flüssigkeit durch einen Wärmetauscher (134) geleitet zu werden.A cooling and lubricating system of an internal combustion engine (10) with a pump (18), a cooling circuit and a lubricating circuit is designed in such a way that lubricating or cooling liquid from the pump (18) out of the cooling and lubricating circuit of the pump (18) is fed in parallel. In this way, all of the liquid required for lubrication need not be passed through a heat exchanger (134).

Description

Die Erfindung betrifft ein Kühl- und Schmiersystem eines Verbrennungsmotors mit einer Pumpe, einem Kühlkreislauf und einem Schmierkreislauf.The invention relates to a cooling and lubrication system of an internal combustion engine with a pump, a cooling circuit and a lubrication circuit.

Bei einem bekannten Kühl- und Schmiersystem (US-A-3 162 998) ist ein Verbrennungsmotor mit einem Ölkühler verse­hen, in dem Schmierflüssigkeit gekühlt wird und von wo aus sie einem Ladeluftkühler zugeführt wird, um die für die Verbrennung benötigte Luft abzukühlen. Diese Anord­nung hat jedoch zur Folge, daß stets die gesamte Flüssig­keitsmenge, die zur Abkühlung der Ladeluft benötigt wird, stets auch durch den Ölkühler geführt werden muß. Daraus ergibt sich der Nachteil, daß der Ölkühler relativ groß auszubilden ist.In a known cooling and lubrication system (US-A-3 162 998) an internal combustion engine is provided with an oil cooler, in which lubricating liquid is cooled and from where it is supplied to an intercooler in order to cool the air required for the combustion. However, this arrangement means that the entire amount of liquid that is required to cool the charge air must always be passed through the oil cooler. This results in the disadvantage that the oil cooler is relatively large.

Die der Erfindung zugrundeliegende Aufgabe wird darin ge­sehen, ein Kühl- und Schmiersystem eines Verbrennungsmo­tors zu schaffen, das eine möglichst kleine Ausbildung bzw. optimale Auslastung eines Wärmetauschers ergibt.The object on which the invention is based is seen in creating a cooling and lubricating system for an internal combustion engine which results in the smallest possible design or optimal utilization of a heat exchanger.

Diese Aufgabe ist erfindungsgemäß durch die Lehre des Pa­tentanspruchs 1 gelöst worden, wobei diese Lehre durch die Merkmale, die in den weiteren Patentansprüchen enthalten sind, fortentwickelt wird.This object has been achieved according to the invention by the teaching of patent claim 1, this teaching being further developed by the features which are contained in the further patent claims.

Auf diese Weise kann die Größe des Volumenstromes sowohl durch den Kühlkreislauf als auch durch den Schmierkreis­lauf unabhängig voneinander bemessen werden, so daß den Komponenten, z. B. einem Wärmetauscher in dem Kühlkreis­lauf nur der wirklich erforderliche Volumenstrom zugeführt wird.In this way, the size of the volume flow can be measured independently of one another, both through the cooling circuit and through the lubrication circuit, so that the components, e.g. B. a heat exchanger in the cooling circuit only the really required volume flow is supplied.

Durch die Merkmale der weiteren Ansprüche wird erreicht, daß sowohl einem zweistufigen Wärmetauscher als auch ei­ner gegebenenfalls in einer Fahrerkabine eines Fahrzeuges vorgesehenen Heizung nur soviel Flüssigkeit zugeführt wird, wie es zum einen seitens des Schmierkreislaufs zu­lässig ist und zum anderen für eine Aufwärmung eines Raumes, etwa der Fahrerkabine erforderlich ist.The features of the further claims ensure that both a two-stage heat exchanger and one optionally in a driver's cabin of a vehicle The heating provided is only supplied with as much liquid as is permitted on the one hand by the lubrication circuit and on the other hand for heating up a room, for example the driver's cabin.

In der Zeichnung mit nur einer einzigen Figur ist ein nach­folgend näher beschriebenes Ausführungsbeispiel der Erfin­dung dargestellt.In the drawing with only a single figure, an embodiment of the invention described in more detail below is shown.

Ein Verbrennungsmotor 10 mit innerer Verbrennung ist mit einem Zylinderkopf 12, einem Motorblock 14, einem Sammel­behälter 16 für Flüssigkeit, insbesondere für Öl, und mit einer Pumpe 18 ausgestattet. Der im folgenden benutzte Be­griff "Flüssigkeit" schließt sowohl Kühlflüssigkeit als auch Schmierflüssigkeit ein. In dem Motorblock 14 ist eine Vielzahl von Zylindern 20 vorgesehen, von denen einer ge­zeigt ist, und in denen sich jeweils ein Kolben 22 hin- ­und herbewegt, die über Pleuelstangen 24 mit einer Kurbel­welle 26 verbunden sind. Der Zylinderkopf 12 weist Einläs­se 28 und nicht gezeigte Auslässe, Ventile 30, Ventilsitze 32 und über eine Nockenwelle 35 angetriebene Kipphebel 34 auf.An internal combustion engine 10 is equipped with a cylinder head 12, an engine block 14, a collecting container 16 for liquid, in particular for oil, and with a pump 18. The term "liquid" used below includes both cooling liquid and lubricating liquid. In the engine block 14, a plurality of cylinders 20 are provided, one of which is shown, and in each of which a piston 22 moves back and forth, which are connected to a crankshaft 26 via connecting rods 24. The cylinder head 12 has inlets 28 and outlets (not shown), valves 30, valve seats 32 and rocker arms 34 driven by a camshaft 35.

Die Pumpe 18 saugt aus dem Sammelbehälter 16 Flüssigkeit an und pumpt sie zu einer Hauptgallerie 36, von wo aus sie über einen Kühl- und einen Schmierkreislauf, die zueinan­der parallel geschaltet sind, zurück zum Sammelbehälter 16 fließt.The pump 18 draws liquid from the collection container 16 and pumps it to a main gallery 36, from where it flows back to the collection container 16 via a cooling and a lubrication circuit which are connected in parallel with one another.

Im einzelnen fließt die Flüssigkeit von der Hauptgalle­rie 36 aus über eine Leitung 38 einem Filter 40 zu. Die­ser Filter 40 wird über eine Umgehungsleitung 42 umgangen, wenn er verstopft ist, und ein Druckregelventil 44 darauf­hin öffnet. Die Flüssigkeit kann unter bestimmten Druck­verhältnissen auch über ein weiteres Druckregelventil 46 und eine Leitung 48 dem Sammelbehälter 16 zugeführt wer­den. Schließlich verläuft auch eine Leitung 50 zu einer Schmiergallerie 52, die in den Motorblock 14 eingearbeitet ist.In particular, the liquid flows from the main gallery 36 to a filter 40 via a line 38. This filter 40 is bypassed via a bypass line 42 if it is clogged and a pressure control valve 44 then opens. Under certain pressure conditions, the liquid can also be supplied to the collecting container 16 via a further pressure control valve 46 and a line 48. Finally, a line 50 also runs to one Lubrication gallery 52, which is incorporated into the engine block 14.

Die Schmiergallerie 52 führt Flüssigkeit einem herkömmli­chen Schmierkreislauf des Verbrennungsmotors 10 zu, der insbesondere Hauptlagerschmierkanäle 54 und Sprühdüsen 56 enthält. Von der Schmiergallerie 52 führt auch eine Lei­tung 58 zu einer Schmiergallerie 60 in dem Zylinderkopf 12, die Flüssigkeit den Lagern der Kipphebel 34 und der Nockenwelle 35 zuleitet. Die in dem Zylinderkopf 12 ver­brauchte Flüssigkeit sammelt sich in einer Gallerie 62 an und fließt von dort aus über eine Leitung 64 wieder dem Sammelbehälter 16 zu.The lubrication gallery 52 supplies liquid to a conventional lubrication circuit of the internal combustion engine 10, which in particular contains main bearing lubrication channels 54 and spray nozzles 56. A line 58 also leads from the lubrication gallery 52 to a lubrication gallery 60 in the cylinder head 12, which supplies liquid to the bearings of the rocker arms 34 and the camshaft 35. The liquid consumed in the cylinder head 12 collects in a gallery 62 and flows from there via a line 64 back to the collecting container 16.

Der Kühlkreislauf des Verbrennungsmotors 10 enthält eine Leitung 100, die Flüssigkeit von der Hauptgallerie 36 zu einer Gallerie 102 in der Nähe des oberen Bereichs der Zy­linder 20 führt. Von dort fließt die Flüssigkeit zu ring­förmigen Kühlnuten 104, über die der obere Bereich der Zy­linder 20 gekühlt wird, und dann weiter zu einer Gallerie 106.The cooling circuit of the internal combustion engine 10 includes a conduit 100 that carries liquid from the main gallery 36 to a gallery 102 near the top of the cylinders 20. From there, the liquid flows to annular cooling grooves 104, via which the upper region of the cylinders 20 is cooled, and then on to a gallery 106.

Eine Leitung 108 leitet Flüssigkeit von der Gallerie 102 zu einer Gallerie 110 in dem Zylinderkopf 12. Von dieser Gallerie 110 fließt die Flüssigkeit durch Ringnuten 112, die um die Ventilsitze 32 der Auslaßventile angeordnet sind, weiter zu einer Gallerie 114 in dem Zylinderkopf 12, aus der sie über Leitungen 116 oder 118 wieder abfließt. Mittels der Leitung 116 wird die erhitzte Flüssigkeit von dem Verbrennungsmotor 10 über ein Steuerventil 120 einer Heizung 122 in einem Raum 123, insbesondere in einer Fah­rerkabine eines Ackerschleppers, und von diesem über eine Leitung 124 dem Sammelbehälter 16 zugeführt. Vorzugsweise ist eine Steuereinrichtung 121 für das Steuerventil 120 in dem Raum 123 vorgesehen, so daß die Menge der heißen Flüs­sigkeit, die der Heizung 122 zugeführt wird, von einer Be­dienungsperson eingestellt werden kann. Die Leitung 118 führt Flüssigkeit von der Gallerie 114 in dem Zylinderkopf 12 zu der Gallerie 106 in dem Motorblock 14, von wo aus sie über eine Leitung 126 einem temperaturgesteuerten ther­mostatisch arbeitenden Ventil 128 zufließt. Dieses Ventil 128 wird vorzugsweise in Abhängigkeit von der Flüssigkeits­temperatur in der Schmiergallerie 52 gesteuert, die mittels eines Gebergliedes 130 erfaßt wird. Das Geberglied 130 ist in der Art eines Temperatursensors ausgebildet, der in dem Motorblock 14 untergebracht und der Flüssigkeit in der Schmiergallerie 52 ausgesetzt ist. Das Ventil 128 führt heiße Flüssigkeit von der Leitung 126 entweder dem Sammel­behälter 16 über eine Umgehungsleitung 131 oder einem Wär­metauscher 134 über eine Leitung 132 zu. Der Wärmetauscher 134 enthält hintereinander geschaltete erste und zweite Stufen 134a und 134b, einen ersten Ausgang 136, einen zwei­ten Ausgang 138 und einen Abfluß 139. Der erste Ausgang 136 enthält nur Flüssigkeit, die der ersten Stufe 134a ent­nommen ist. Der zweite Ausgang 138 hingegen nimmt Flüssig­keit auf, die durch beide Stufen 134a und 134b geflossen ist. Dementsprechend wird die Flüssigkeit, die nur durch die erste Stufe 134a geflossen ist und an dem ersten Aus­gang 136 austritt, heißer sein, als Flüssigkeit, die an dem zweiten Ausgang 138 austritt. So kann in einem bestimm­ten Falle die Flüssigkeit in der Leitung 132 ca. 140° Cel­sius, an dem ersten Ausgang 136 ca. 110° Celsius und an dem zweiten Ausgang 138 ca. 60° Celsius betragen. Vorzugs­weise ist der Wärmetauscher 134 derart ausgebildet, daß er zu dem ersten Ausgang 136 einen größeren Volumenstrom zu­läßt, als zu dem zweiten Ausgang 138. Demgemäß wird das zusätzliche Volumen des Wärmetauschers 134, das erforder­lich ist, um die Flüssigkeit auf die geringste Temperatur an dem zweiten Ausgang 138 herabzukühlen, nicht von der gesamten dem Wärmetauscher 134 zufließenden Flüssigkeits­menge durchflossen, und die Durchflußmenge durch den zwei­ten Ausgang 138 beträgt nur ungefähr die Hälfte der aus dem ersten, heißeren Ausgang 136 austretenden Flüssigkeits­menge. In einer Leitung 140 wird die gekühlte Flüssigkeit von dem ersten Ausgang 136 des Wärmetauschers 134 dem Sam­melbehälter 16 zugeführt. Über eine weitere Leitung 142 wird Flüssigkeit dem zweiten Ausgang 138 entnommen und an einen Ladeluftkühler 144 abgegeben, von wo aus sie über eine Leitung 146 ebenfalls zum Sammelbehälter 16 fließt. Selbstverständlich ist ein derartiger Ladeluftkühler 144 nur vorgesehen, wenn die Ansaugluft abgekühlt wird; hin­gegen werden der zweite Ausgang 138, die Leitung 142 und die Leitung 146 nicht benötigt, wenn es sich um einen Ver­brennungsmotor 10 ohne Ladeluftkühler 144 und mit natürli­cher Ansaugung handelt.A conduit 108 conducts fluid from gallery 102 to gallery 110 in cylinder head 12. From this gallery 110, the fluid flows through annular grooves 112, which are arranged around valve seats 32 of the exhaust valves, to gallery 114 in cylinder head 12 which flows out again via lines 116 or 118. By means of the line 116, the heated liquid is fed from the internal combustion engine 10 via a control valve 120 to a heater 122 in a room 123, in particular in a driver's cab of an agricultural tractor, and from there via a line 124 to the collecting container 16. A control device 121 for the control valve 120 is preferably provided in the space 123 so that the amount of the hot liquid which is supplied to the heater 122 can be set by an operator. Line 118 leads liquid from the gallery 114 in the cylinder head 12 to the gallery 106 in the engine block 14, from where it flows via a line 126 to a temperature-controlled thermostatic valve 128. This valve 128 is preferably controlled as a function of the liquid temperature in the lubrication gallery 52, which is detected by means of a transmitter element 130. The transmitter element 130 is designed in the manner of a temperature sensor, which is accommodated in the engine block 14 and is exposed to the liquid in the lubrication gallery 52. Valve 128 supplies hot liquid from line 126 to either reservoir 16 via bypass 131 or to heat exchanger 134 via line 132. The heat exchanger 134 contains series-connected first and second stages 134a and 134b, a first outlet 136, a second outlet 138 and a drain 139. The first outlet 136 contains only liquid which has been taken from the first stage 134a. The second outlet 138, on the other hand, receives liquid which has flowed through both stages 134a and 134b. Accordingly, the liquid that has only flowed through the first stage 134a and exits at the first outlet 136 will be hotter than liquid that exits at the second outlet 138. Thus, in a particular case, the liquid in the line 132 can be approximately 140 ° Celsius, at the first outlet 136 approximately 110 ° Celsius and at the second outlet 138 approximately 60 ° Celsius. Preferably, the heat exchanger 134 is configured to allow a greater volume flow to the first outlet 136 than to the second outlet 138. Accordingly, the additional volume of the heat exchanger 134 required to bring the liquid to the lowest temperature at the second Cool down outlet 138, not flowed through by the total amount of liquid flowing to heat exchanger 134, and the flow through second outlet 138 is only about half the amount of liquid exiting first, hotter outlet 136. In a line 140, the cooled liquid from the first outlet 136 of the heat exchanger 134 to the collecting container 16. Liquid is withdrawn from the second outlet 138 via a further line 142 and delivered to a charge air cooler 144, from where it also flows via a line 146 to the collecting container 16. Of course, such an intercooler 144 is only provided when the intake air is cooled; on the other hand, the second output 138, the line 142 and the line 146 are not required if it is an internal combustion engine 10 without an intercooler 144 and with natural intake.

In dem Fall, daß der Verbrennungsmotor 10 mit einem nicht gezeigten Turbolader ausgerüstet ist, kann eine zusätzli­che, ebenfalls nicht gezeigte Schmierleitung vorgesehen werden, um Flüssigkeit zum Schmieren von dem Filter 40 aus dem Turbolader und von diesem zurück in den Sammelbehälter 16 zu leiten.In the event that the internal combustion engine 10 is equipped with a turbocharger (not shown), an additional lubrication line, also not shown, can be provided in order to conduct liquid for lubrication from the filter 40 out of the turbocharger and back into the reservoir 16.

Claims (8)

1. Kühl- und Schmiersystem eines Verbrennungsmotors (10) mit einer Pumpe (18), einem Kühlkreislauf und einem Schmierkreislauf, dadurch gekennzeichnet, daß der Kühl- und der Schmierkreislauf der Pumpe (18) paral­lel nachgeschaltet sind.1. Cooling and lubrication system of an internal combustion engine (10) with a pump (18), a cooling circuit and a lubrication circuit, characterized in that the cooling and lubrication circuit of the pump (18) are connected in parallel. 2. Kühl- und Schmiersystem nach Anspruch 1, dadurch ge­kennzeichnet, daß der Kühlkreislauf über eine Heizung (122) für eine Raumheizung verläuft.2. Cooling and lubrication system according to claim 1, characterized in that the cooling circuit runs through a heater (122) for space heating. 3. Kühl- und Schmiersystem nach Anspruch 1 oder 2 mit einem Ladeluftkühler (144) und einem Sammelbehälter (16), dadurch gekennzeichnet, daß der Kühlkreislauf einen zweistufigen Wärmetauscher (134) enthält, wo­bei ein Ausgang (136) der ersten Stufe (134a) mit dem Sammelbehälter (16) und der zweiten Stufe (134b) und ein Ausgang (138) der zweiten Stufe (134b) mit dem Ladeluftkühler (144) verbunden ist.3. Cooling and lubrication system according to claim 1 or 2 with a charge air cooler (144) and a collecting container (16), characterized in that the cooling circuit contains a two-stage heat exchanger (134), with an outlet (136) of the first stage (134a) with the collecting container (16) and the second stage (134b) and an outlet (138) of the second stage (134b) with the charge air cooler (144). 4. Kühl- und Schmiersystem nach Anspruch 3, dadurch ge­kennzeichnet, daß dem zweistufigen Wärmetauscher (134) ein Ventil (128) mit einer Leitung (131) zu dem Sammel­behälter (16) vorgeschaltet ist, das einen Flüssig­keitsstrom sowohl zu dem zweistufigen Wärmetauscher (134) als auch zu dem Sammelbehälter (16) in einem bestimmbaren Verhältnis zuläßt.4. Cooling and lubrication system according to claim 3, characterized in that the two-stage heat exchanger (134) is preceded by a valve (128) with a line (131) to the collecting container (16), which a liquid flow to both the two-stage heat exchanger (134 ) as well as to the collecting container (16) in a determinable ratio. 5. Kühl- und Schmiersystem nach Anspruch 4, dadurch ge­kennzeichnet, daß in dem Schmierkreislauf ein Geber­glied (130) und an dem Ventil (128) ein diesem zuge­ordnetes Nehmerglied vorgesehen sind, über die das Verhältnis geregelt wird.5. Cooling and lubrication system according to claim 4, characterized in that in the lubrication circuit an encoder member (130) and on the valve (128) an associated slave member are provided, via which the ratio is regulated. 6. Kühl- und Schmiersystem nach Anspruch 5, dadurch ge­kennzeichnet, daß das Geberglied (130) dem Nehmerglied Signale zuführt, deren Wert in Abhängigkeit zu einer im Schmierkreislauf gemessenen Temperatur steht.6. Cooling and lubrication system according to claim 5, characterized in that the transmitter member (130) the slave member Feeds signals whose value is dependent on a temperature measured in the lubrication circuit. 7. Kühl- und Schmiersystem nach einem oder mehreren der vorherigen Ansprüche, dadurch gekennzeichnet, daß so­wohl der Kühlkreislauf als auch der Schmierkreislauf einlaßseitig mit der Pumpe (18) und auslaßseitig mit dem Sammelbehälter (16) in Verbindung stehen.7. Cooling and lubrication system according to one or more of the preceding claims, characterized in that both the cooling circuit and the lubrication circuit on the inlet side are connected to the pump (18) and on the outlet side to the collecting container (16). 8. Kühl- und Schmiersystem nach einem oder mehreren der vorherigen Ansprüche, wobei der Verbrennungsmotor (10) in einem Fahrzeug, insbesondere in einem Acker­schlepper vorgesehen ist.8. Cooling and lubrication system according to one or more of the preceding claims, wherein the internal combustion engine (10) is provided in a vehicle, in particular in a tractor.
EP87107652A 1986-06-16 1987-05-26 Cooling and lubrication system for an internal-combustion engine Expired - Lifetime EP0249776B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US06/874,903 US4708095A (en) 1986-06-16 1986-06-16 Combined engine cooling and lube system
US874903 1986-06-16

Publications (3)

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EP0249776A2 true EP0249776A2 (en) 1987-12-23
EP0249776A3 EP0249776A3 (en) 1988-12-07
EP0249776B1 EP0249776B1 (en) 1991-09-18

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EP87107652A Expired - Lifetime EP0249776B1 (en) 1986-06-16 1987-05-26 Cooling and lubrication system for an internal-combustion engine

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US (1) US4708095A (en)
EP (1) EP0249776B1 (en)
JP (1) JPS6336018A (en)
KR (1) KR950004535B1 (en)
CN (1) CN1008647B (en)
AR (1) AR240077A1 (en)
AT (1) ATE67558T1 (en)
AU (1) AU592193B2 (en)
CA (1) CA1329522C (en)
DE (1) DE3773056D1 (en)
ES (1) ES2025092B3 (en)
MX (1) MX167597B (en)

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Also Published As

Publication number Publication date
EP0249776A3 (en) 1988-12-07
KR880000670A (en) 1988-03-28
JPS6336018A (en) 1988-02-16
CN87104711A (en) 1987-12-30
CN1008647B (en) 1990-07-04
ES2025092B3 (en) 1992-03-16
AR240077A1 (en) 1990-01-31
ATE67558T1 (en) 1991-10-15
DE3773056D1 (en) 1991-10-24
AU592193B2 (en) 1990-01-04
KR950004535B1 (en) 1995-05-02
MX167597B (en) 1993-03-30
AU7428887A (en) 1987-12-17
US4708095A (en) 1987-11-24
EP0249776B1 (en) 1991-09-18
CA1329522C (en) 1994-05-17

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